lib-storage: mailbox_list_mailbox() now copies the mailbox_exists() error. Instead of assuming it has to be an internal error.
lib-storage: mailbox_list_mailbox() now copies the mailbox_exists() error.
Instead of assuming it has to be an internal error.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot